Automated Trading Desk, LLC develops automated trading systems for the trading companies, buy-side and sell-side firms, and financial institutions. It offers AUTO, which is designed to execute receive priority and preference over proprietary trades for the customers; AUTO-PILOT that is designed to execute large orders with minimal market impact; and automated pink sheet and bulletin board trading execution service. The company was founded in 1988 and is based in Mount Pleasant, South Carolina. As of October 3, 2007, Automated Trading Desk, LLC was as a subsidiary of Citigroup, Inc. It now operates as a subsidiary of Automated Trading Desk Holdings, Inc., a subsidiary of Citigroup, Inc.